JP4754340B2 - Emergency disconnection device for fluid handling equipment - Google Patents

Description

  The present invention relates to an emergency disconnecting device in a fluid handling apparatus that is installed on a jetty or the like and loads and unloads fluid such as liquefied petroleum gas between a tanker and a land-based fluid receiving facility.

Conventionally, as an emergency disconnection device for this type of fluid handling device, a pair of couplers provided with an on-off valve and connected to each other by connecting the connection flanges to each other and a plurality of clamp members are hinged and connected to each other via a connecting rod. A clamper that is annularly attached to the outer periphery of each connection flange and connects the connection flanges by the clamp member, and an end clamp member that is positioned at the end of the clamper are connected to one end clamp member. A coupling mechanism that is separably coupled via a coupling rod that is hinge-coupled and a coupling link that is hinge-coupled to the other end clamp member; and a coupling mechanism that is separably connected between the couplers. Link mechanism that opens and closes the opening and closing valve, and opens and closes the opening and closing valve and closes each opening and closing valve in an emergency Further, an operation mechanism is known that includes an operation mechanism that presses the connecting rod of the connecting mechanism at the end of the clamper to release the connection between the connecting link and the connecting rod (for example, see Patent Document 1). .
Japanese Patent No. 3601983

As shown in FIG. 7, in the emergency disconnecting device, the operating mechanism 50 has a lever 52 fixed to a valve shaft 51 that rotates the on-off valve, and a rod 53 a of a hydraulic cylinder 53 having one end rotatable. An operation rod 55 is rotatably connected to the other end portion of the connection link 54 connected to the front end of the hydraulic cylinder 53 and moved forward and backward along the moving direction in the moving direction of the rod 53a of the hydraulic cylinder 53. The other end portion of the operation lever 56 that is rotated about one end by the rod 55 is configured to come into contact with the connecting rod 57 of the clamper so that it can be pressed.
In an emergency, the rod 53a of the hydraulic cylinder 53 is extended to rotate the valve shaft 51 via the connection link 54 and the lever 52 to close the on-off valve, and the lever 52 rotates 90 °. After the opening / closing valve is closed, the rod 53a of the hydraulic cylinder 53 is further extended, whereby the operation rod 55 is rotated by the tip of the rod 53a via the connection link 54, and the operation rod 55 is rotated. The connecting rod 57 connected to one end clamping member of the clamper is pushed and moved, and the connecting rod 57 and the connecting link connected to the other end clamping member use the respective hinge portions as fulcrums. By rotating to the connection release side, the pin connecting portion between the connecting rod 57 and the connecting link is separated, and the outside of the connecting flange of the coupler is removed. Parts to be mounted is opened end clamp member which has been closed in an annular, each end clan members are separated from each other.

  However, the emergency disconnection device is in a state where the connection link 54 and the lever 52 intersect each other at a substantially right angle immediately before the lever 52 rotates 90 ° and the on-off valve closes, and the thrust of the hydraulic cylinder 53 is applied to the opening / closing. Since it is not effectively converted into torque for rotating the valve, when the opening / closing valve has a large diameter and a large rotational torque is required, the opening / closing valve may not be tightly closed. Further, since the connecting portion between the connecting link 54, the lever 52 and the rod 53a has a combined structure in which a pin shaft is fitted into the elongated hole, the connecting portion is easily worn and slightly worn. However, the transmission accuracy of the movement between the connection link 54 and the lever 52 and between the connection link 54 and the rod 53a is lowered, and there is a further concern that it cannot be closed with an appropriate rotational torque when the on-off valve is closed. .

  The present invention has been made in view of the above circumstances, and can close the coupler on-off valve with a firm closing force, and can quickly release the coupling of the coupler after the on-off valve is closed. An object of the present invention is to provide an emergency separation device for a fluid handling device.

The present invention is characterized by the following points in order to solve the above problems.
That is, the emergency disconnecting device in the fluid handling apparatus according to claim 1 of the present invention is a butt-matching device in which a pair of couplers provided with on-off valves and connected to each other by connecting connection flanges and a plurality of clamp members are connected by hinges. And a pair of couplers, which are annularly mounted on the outer periphery of each connection flange in a state of being connected to each other, and which connect the pair of couplers by detachably connecting end clamp members located at both ends by a connection mechanism An interlocking mechanism for interlocking the opening / closing operation of each of the on / off valves, and after rotating the valve shaft of one of the couplers to close each of the on / off valves, An emergency disconnecting device in a fluid handling device having an operation mechanism for releasing the connection between clamp members,
The operating mechanism is fixed to the valve shaft of the cylinder device and the opening / closing valve of the one coupler, and abuts on the tip of the rod of the cylinder device to rotate the valve shaft in the valve closing direction by extension of the rod. And a cam having a cam surface that allows the rod to extend in a state in which the rotation of the valve shaft is stopped after the on-off valves are closed, and the cam shaft extends after the rotation of the valve shaft by the cam is stopped. The rod is configured to operate the coupling mechanism.

  The emergency disconnecting device in the fluid handling apparatus according to claim 2 is the emergency disconnecting device according to claim 1, wherein the cam surface of the cam is at a reduced end position of the rod of the cylinder device when the on-off valve is fully opened. Formed to be in contact with the tip of the rod at right angles to the direction of expansion and contraction of the rod and to be in contact with the tip of the rod in parallel with the extension direction of the rod when the on-off valve is fully closed by the extension of the rod. It is characterized by being.

  The emergency disconnecting device in the fluid handling apparatus according to claim 3 is the emergency disconnecting device according to claim 1 or 2, wherein the operating mechanism is extended by the rod extending after the rotation of the valve shaft by the cam is stopped. A pusher that is pressed and moved to operate the coupling mechanism is provided.

  The emergency disconnecting device in the fluid handling apparatus according to claim 4 is the emergency disconnecting device according to claim 3, wherein the one coupler is a cylinder device in which a pressure roller and a guide roller are rotatably supported at a tip of a rod. Is attached so that the expansion / contraction direction of the rod coincides with the axial direction of the coupler, the pusher is supported so as to be movable in a direction perpendicular to the expansion / contraction direction of the rod, and the guide roller of the rod is brought into contact with the rod. A guide rail is installed to guide the rod in the direction of expansion and contraction. As the rod extends, the pressing roller moves along the guide rail via the guide roller and contacts the cam to rotate the valve shaft. In addition, after the rotation of the valve shaft by the cam is stopped, the guide roller presses and moves the pusher to contact the connecting mechanism. It is characterized in that.

The present invention has the following excellent effects.
That is, according to the emergency disconnection device in the fluid handling apparatus according to claim 1, the cam fixed to the valve shaft of the on-off valve of the coupler is swung with its cam surface being brought into contact with the tip of the rod of the cylinder device. Thus, since the valve shaft is rotated, there is no need to use a link mechanism provided with a plurality of connecting portions formed by fitting pins into elongated holes between the valve shaft and the rod of the cylinder device. The rotation mechanism of the valve shaft of the on-off valve is simple, and the movement of the rod of the cylinder device can be accurately transmitted to the rotation of the valve shaft, and the on-off valve can be reliably closed by a firm closing force. it can. Then, after the on-off valve is closed, the connecting mechanism is immediately operated by further extension of the rod of the cylinder device while the on-off valve is reliably maintained in the closed state by the cam surface, and the coupler is connected by the connecting mechanism. Can be released.

Further, according to the emergency disconnection device in the fluid handling apparatus according to claim 2, when the on-off valve is closed, the extension movement of the rod of the cylinder device is effectively transmitted to the turning motion of the cam, and the on-off valve is quickly closed. After the valve is closed, the rod can smoothly and quickly shift to the operation of the coupling mechanism while maintaining the closed state of the on-off valve firmly.
Further, according to the emergency disconnecting device in the fluid handling apparatus according to claim 3, the movement direction of the rod of the cylinder device can be changed by the pusher so that the coupling mechanism of the clamper can be reliably operated. The degree of freedom in selecting the mounting position on the coupler of the device is increased, and the device can be easily designed and manufactured.

  According to the emergency disconnecting device in the fluid handling apparatus according to claim 4, when the rod of the cylinder device rotates the cam via the pressing roller, the force for bending the rod laterally with respect to the expansion / contraction direction is guided. The roller can be removed effectively by contacting the guide rail, and the rod can be smoothly extended and moved, and the pusher can be smoothly operated by the guide roller. Further, since the cylinder device is attached to the coupler along the axial direction and does not protrude in the lateral direction, there is no fear that the cargo handling device may collide with other equipment or the like when it is inadvertently moved.

Hereinafter, an emergency disconnecting device in a fluid handling device according to an embodiment of the present invention will be described with reference to the drawings.
1 to 3, reference numeral 1 denotes an emergency disconnecting device in a fluid handling apparatus according to an embodiment of the present invention. The emergency disconnecting device 1 includes a pair of couplers 2 and 2 that are connected to each other by a clamper 3 so that the connection flanges 2a and 2a are brought into contact with each other.
Each of the couplers 2 and 2 has the on-off valve (in the example shown in the figure) inside a coupler main body 2c provided with the connecting flange 2a on one end side and the flange 2b connected to the piping of the fluid handling device on the other end side. Ball valve) 4 is supported by a pair of bearing portions 2d and 2e provided with valve shaft 4a on both sides (upper and lower sides in FIG. 2) of coupler body 2c, and an angle between the valve open position and the valve close position It is provided and configured to rotate by 90 °.

The on-off valves 4 and 4 are open from the flange 2b of the coupler main body 2c (leftward in FIGS. 1 and 2) to the other (rightward in FIGS. ), The fluid passages L, L reaching the flange 2b of the coupler main body 2c are communicated, and the on-off valve 4 is in the closed position (the on-off valves 4, 4 are rotated by 90 ° from the state of FIGS. 1 and 2). , 4 are brought into contact with valve seats 4b, 4b mounted on the inside of the connection flanges 2a, 2a so that the passages L, L are blocked.
The clamper 3 is aligned with a back surface inclined so that the outer peripheral sides of the connection flanges 2a and 2a are thin, and a plurality of arcuate fitting grooves 5a having a trapezoidal cross section are formed inside (example shown in the figure). 4) arc-shaped clamp members 5 and 5 are formed by connecting adjacent members with a hinge pin 7 via a connecting rod 6. Then, as shown in FIG. 3, the clamper 3 is annularly mounted by fitting the fitting groove 5a on the outer peripheral portion of the connecting flanges 2a, 2a with which the couplers 2, 2 are abutted. The clamp members 5 and 5 (end clamp members 5e and 5e) are connected to each other by the connecting mechanism 8 so as to be separable so that the butted surfaces of the connection flanges 2a and 2a are brought into close contact with each other so that the couplers 2 and 2 are connected. It has become.

  The connecting mechanism 8 includes a long connecting rod 9 whose base end is rotatably connected to one end clamp member 5e (lower side in FIG. 3) by a hinge pin 7a, and the other (upper side in FIG. 3). A pair of support pieces 10 and 10 fixed to the end clamp member 5e and a pair of support pieces 10 and 10 so that the base end portion is rotatably supported via pins 11 and 11, and a pair of semicircular recesses 12a are provided at the tip ends. Link 12, 12. A receiving plate 13 is screwed to the tip of the connecting rod 9 and fixed with a nut 13a. The lower end of the receiving plate 13 is elastically attached to the hinge pin 7a side via a disc spring 14. A biased pin support member 15 is arranged. The pin support member 15 is formed with a pair of grooves 15a and 15a on both sides of the hole through which the connecting rod 9 is inserted, and the pair of pins 16 and 16 cross the grooves 15a and 15a. 15, the distal ends of the links 12, 12 are inserted into the grooves 15 a, 15 a, and the recess 12 a is in contact with the pins 16, 16. A covered cylindrical spring case 17 is attached to the upper end of the pin support member 15 so as to surround the receiving plate 13 and the disc spring 14, and the pin support member 15 is movable in the axial direction of the connecting rod 9. It is said that.

  When the clamper 3 is mounted on the connection flanges 2a and 2a, the center c2 of the pin 16 is a straight extension S connecting the center c1 of the hinge pin 7a and the pin 11 in the front view shown in FIG. When the link 12 is positioned on the center side of the coupler 2, the link 12 is subjected to a rotational force on the center side of the coupler 2 through the pin 16 by the biasing force of the disc spring 14. Thereby, the end clamp members 5e and 5e of the clamper 3 are connected to each other through the connecting rod 9 and the link 12 so as to be attracted to each other, and the connecting flanges 2a and 2a of the couplers 2 and 2 are connected to their abutting surfaces. From this state, the connecting rod 9 is forcibly moved away from the center of the coupler 2 around the hinge pin 7a, and the pin 16 is moved straight. When crossing S, the pin 16 pivots the link 12 outward to release the connection between the connecting rod 9 and the link 12, as shown by the chain line in FIG. The connection between the clamp members 5e and 5e is released, and the connection flanges 2a and 2a of the couplers 2 and 2 can be separated.

  The levers 18 and 18 extended in the diametrical direction are fixed to one end (the upper end in FIGS. 2 and 3) of the valve shafts 4a and 4a of the on-off valves 4 and 4 in the couplers 2 and 2, respectively. The interlock rods 19 and 19 are connected to both ends of the lever 18 fixed to the valve shaft 4a of the coupler 2 of Fig. 1 and Fig. 2 (on the left side) with shaft pins 18a and 18a ( In FIG. 1, the shaft pin 18 a of the upper lever 19 is connected so as to be rotatable. Engaging portions 19a and 19a having U-shaped concave portions provided on the distal end side in a plan view (FIG. 1) are coupled to the other end portions of the connecting rods 19 and 19, respectively. However, the concave portion is brought into contact with shaft pins 18b fixed to both ends of the lever 18 of the valve shaft 4a in the couplers 2 and 2 on the other side (right side in FIGS. 1 and 2). The levers 18 and 18, the connecting rods 19 and 19, and the pin shafts 18 a and 18 b constitute a parallelogram link mechanism that opens and closes the open / close valves of both the couplers 2 and 2. The basic structure of the link mechanism for opening and closing the couplers 2 and 2, the clamper 3, the connecting mechanism 8 of the clamper 3, and the on-off valve in conjunction with each other is well known.

  A support plate 20 made of a rectangular flat plate is fixed to one end (the upper end in FIGS. 2 and 3) of the bearing portion 2 d of the one coupler 2, and protrudes from the support plate 20 of the one coupler 2. A cam 21 protruding to one side in the radial direction of the valve shaft 4a (upward in FIG. 1) is attached to the valve shaft 4a with its boss portion 21a fixed by a fixing tool 21b. A lever 22 is fixed to the boss portion 21a so as to protrude in the radial direction opposite to the cam 21 (downward in FIG. 1). The tip of the lever 22 has a connector 24b at the tip of the rod 24a of the first cylinder device 24 supported by a bracket 23 fixed to one end of the support plate 20 so as to be rotatable around a shaft 23a. Via a pin 22a so as to be rotatable.

  Also, a second end is arranged at one end of the support plate 20 in parallel with the first cylinder device 24, and the direction of the rod 25a is arranged along the axial direction of the couplers 2 and 2 (the left-right direction in FIG. 1). The cylinder device 25 is fixed via a bracket 26. At the tip of the rod 25a of the second cylinder device 25, a pressure roller 26a that rotates about an axis parallel to the valve shaft 4a is provided at the center, and guide rollers 26b are provided on both sides of the pressure roller 26a (in FIG. The holders 25b supported by the support shafts 25c are attached to the upper and lower sides. The outer periphery of the pressing roller 26a abuts on the cam surface 21a of the cam 21 fixed to the valve shaft 4a, and the cam 21 is swung in the arrow direction by the extension of the rod 25a. 4a is rotated by 90 °.

  When the rod 25a of the second cylinder device 25 abuts the outer periphery of the pressing roller 26a at the contracted end position (the position indicated by the solid line in FIG. 1), the cam surface 21a extends in the expansion / contraction direction of the rod 25a. When the cam 21 turns 90 ° by extending the rod 25a from the contracted end position (the position indicated by the chain line in FIG. 6), the rod 25a is in contact with the outer peripheral portion of the pressing roller 26a and the It is formed so as to be parallel to the expansion and contraction direction of the rod 25a. A pair of guide rails 27 having a guide surface 27a parallel to the valve shaft 4a along the direction of expansion and contraction of the rod 25a of the second cylinder device 25 on the side of the support plate 20 where the cam 21 exists. 27 is fixed at a distance in the direction of the valve shaft 4a, and guide rollers 26b and 26b supported by the holder 25b of the rod 25a are provided on the guide surfaces 27a and 27a of the guide rails 27 and 27, respectively. The outer peripheral surface opposite to the valve shaft 4a is brought into contact with the valve shaft 4a and moves together with the rod 25a.

  Further, the support plate 20 includes a support plate 20 and another support plate 20a fixed in parallel to the support plate 20 at a position opposite to the cylinder devices 24 and 25 (position on the connection flange 2a side). A plurality of guide rollers 30, 30 rotatably supported by a shaft 29 parallel to the valve shaft 4 a are arranged at intervals in a direction perpendicular to the expansion and contraction direction of the rod 25 a of the second cylinder device 25. . A pair of pressure receiving plates 31a and 31a are connected by a coupling member 31b, and a pusher 31 formed by fixing an operation rod 31c to the tip end side of the pressure receiving plate 31b supports the guide rollers 30 and 30 on the tip end side. The rod 25a is arranged so as to move in a direction perpendicular to the expansion / contraction direction of the rod 25a. A pressure receiving surface 31d inclined by approximately 45 ° is provided on the side surface of the pressure receiving plate 31a facing the rod 25a, the guide roller 26b at the tip of the rod 25a is connected to the cam surface 21a of the cam 21 and the shaft of the rod 25a. After it becomes parallel to the direction, it abuts against the pressure receiving surface 31d, and the pusher 31 is moved forward in the direction of arrow C perpendicular to the expansion / contraction direction of the rod 25a (the axial direction of the coupler 2) as the rod 25a further expands. The distal end portion of the operating rod 31c abuts on the abutting portion 17a on the side surface of the spring case 17 of the coupling mechanism 8, so that the coupling rod 9 in the coupling mechanism 8 moves away from the center of the coupler 2. The pin 16 is forced to move so as to cross the straight line S outward.

  Further, the pusher 31 is provided with a return mechanism 32 for moving and returning the pusher 31 moved to the forward end position in the direction of arrow C to the original position in the direction of arrow D. As shown in FIG. 4, the return mechanism 32 includes a cylindrical member 32 a attached to the end of the support plate 20 on the side opposite to the guide rail 27 in parallel with the pusher 31, and a distal end of the cylindrical member 32 a. A shaft member 32b that protrudes in the direction of the guide rail 27 from 32a and is inserted into the cylindrical member 32a so as to be movable in the axial direction, and the shaft member 32b that is mounted in the cylindrical member 32a is provided at an intermediate portion thereof. A compression spring 32d that urges the guide rail 27 in the direction of the guide rail 27 via a flange portion 32c, and a tip end portion of the shaft member 32b is brought into contact with a projecting piece 31e fixed to the coupling member 31b of the pusher 31. Yes.

  Next, an operation device (operation mechanism) 33 for opening and closing the on-off valves 3 and 3 of the couplers 2 and 2 will be described with reference to FIG. In FIG. 6, P is a hydraulic pressure source. The hydraulic pressure source P is connected to the reset electromagnetic switching valve 35 by pipes 34a and 34b, then connected to the first cylinder device 24 by pipes 36a and 36b, and separated by electromagnetic switching for piping 37a and 37b. After being connected to the valve 38, it is connected to the second cylinder device 25 by pipes 39a and 39b. A flow rate adjustment valve 40 and a limit valve 41 are provided in order from the upstream side in a pipe 36b that connects the port B of the reset electromagnetic switching valve 35 and one end of the cylinder chamber of the first cylinder device 24. .

  When the clamper 3 connects the connection flanges 2a and 2a of the couplers 2 and 2, the limit valve 41 is brought into contact with the link 12 to open the flow path of the pipe 36b, and the connection flange 2a. , 2a is released from the clamper 3 and the link 12 is disengaged from the pin 16 of the connecting rod 9 and moved outward from the center of the coupler 2, the channel of the pipe 36b is closed. Yes. Further, the downstream side of the limit valve 41 in the pipe 36 b is opposite to the pipe 36 a that connects the port A of the electromagnetic switching valve 35 for reset and the cylinder chamber on the other end side of the first cylinder device 24. They are connected by a pipe 42 having a pair of check valves 42a and 42b that stop the flow in the direction.

Further, one check valve (pilot check valve) 42a arranged at a position close to the pipe 36b side in the pipe 42 is connected to the port B of the electromagnetic switching valve 38 for separation and the second cylinder device 25. The pipe 39b is connected to the head side cylinder chamber by a pilot pipe 43, and when pressure is applied to the pilot pipe 43, the flow path is opened to allow the flow of fluid from the pipe 36b to the pipe 36a. However, the fluid flow from the pipe 36b to the pipe 36a is normally blocked.
A flow rate adjusting valve 44 is provided in a pipe 39a that connects the electromagnetic switching valve 38 for separation and the rod side cylinder chamber of the second cylinder device.

  In the emergency disconnection device 1 in the fluid handling apparatus according to the embodiment configured as described above, for example, the tanker is abnormally separated from the jetty or fluctuated abnormally up and down with respect to the jetty. In the case where the piping of the device that is stretchably connected extends and contracts beyond the allowable range, when the allowable range is detected by the sensor, the control device operates and the solenoid b of the electromagnetic switching valve 38 for disconnection is turned on. When excited, the pressure oil from the hydraulic power source P passes through the pipe 39b and enters the head side cylinder chamber of the second cylinder device 25 to extend the rod 25a. As a result, the cam 21 of the valve shaft 4a is turned in the direction of arrow A, and the on-off valve 4 of the one coupler 2 is closed. In that case, the pilot valve 42a is opened by the pressure oil flowing from the pipe 39b through the pilot pipe 43 to allow the hydraulic oil to flow from the pipe 36b to the pipe 36a. The rod 22a of the first cylinder device 24 is freely reduced and moved by the lever 22.

  The cam 21 is turned 90 ° from the state in which the cam surface 21 a is in contact with the pressing roller 26 a at the reduced end position (solid line position in FIG. 6) of the rod 25 a of the second cylinder device 25. When the center of the pressing roller 26a (guide roller 26b) reaches from the position e1 to the position e2, the on-off valve 4 of the one coupler 2 is opened by the rotation of the valve shaft 4a by the cam 21. Transition from the valve state to the fully closed state. When the on-off valve 4 of the one coupler 2 is closed, one of the pair of connecting rods 19 and 19 connected to both ends of the lever 18 fixed to the valve shaft 4a (the upper one in FIG. 1) The U-shaped engaging portion 19a is brought into contact with the shaft pin 18b of the lever 18 fixed to the valve shaft 4a of the other coupler 2, and the lever 18 is turned around the valve shaft 4a. The on / off valve 4 of the coupler 2 is closed simultaneously with the on / off valve 4 of one of the couplers 2.

  In the closed state of the on-off valves 4, 4, the cam surface 21 a of the cam 21 is parallel to the expansion / contraction direction of the rod 25 a, so that the turning around the valve shaft 4 a due to the extension of the rod 25 a is not performed. When the rod 25a is further extended from the closed state of the on-off valves 4 and 4 and the center of the pressing roller 26a reaches the position e3, the guide roller 26b is maintained while the on-off valve 4 is maintained in the closed state. However, the pusher 31 abutted against the pressure receiving surface 31d of the pusher 31 and the projecting piece 32e abutted against the shaft member 32b of the return mechanism 32 to receive the urging force of the compression spring 32d resists the urging force. Therefore, the pusher 31 pushes the spring case 17 of the connecting member 8 in the direction of the arrow, so that the pin 16 of the connecting rod 9 moves between the hinge pin 7 a and the pin 11. It is moved outside the straight line S connecting the centers.

  Accordingly, the end clamp members 5e and 5e of the clamper 3 connecting the connection flanges 2a and 2a of the couplers 2 and 2 are separated from each other, and the connection between the couplers 2 and 2 is released. As a result, the tanker side (the sea side) and the jetty side (the land side) of the pipes connected to the fluid handling device in an extendable manner are separated from each other, so that the fluid handling device is prevented from being damaged and the couplers 2, 2 Since the on-off valves 4 and 4 are completely closed before the two are separated from each other, there is a situation that the cargo handling fluid leaks from the openings of the connection flanges 2a and 2a of the couplers 2 and 2 and the seawater and the pier are contaminated. There is no.

  When the separated couplers 2 and 2 are connected to return the fluid handling device to a state where the fluid handling device can be handled, the connecting flanges 2a and 2 of the couplers 2 and 2 are abutted with each other using an appropriate jig to connect the connecting flanges. The clamper 3 is annularly mounted on the outer periphery of 2a, 2a, and the end clamp members 5e, 5e are connected by the connecting mechanism 8. Then, after engaging the engaging portions 19a, 19a of the connecting rods 19, 19 connected to the lever 18 of one coupler 2 with the shaft pin 18b fixed to the lever 18 of the other coupler 2, After energizing the solenoid a of the separation electromagnetic switching valve 38 and sending pressure oil from the hydraulic source P to the rod side of the second cylinder device 25 to reduce the rod 25a, the reset electromagnetic switching valve 37 When the solenoid b is excited, the pressure oil from the hydraulic pressure source P is sent to one end portion side of the cylinder chamber of the first cylinder device 24 through the pipe 36b, and the rod 24a is extended through the lever 22. As a result, the valve shaft 4a of the one coupler 2 is rotated by 90 ° in the direction of the arrow, whereby the on-off valve 4 of the one coupler 2 is opened and simultaneously fixed to the valve shaft 4a. The lever 18 of the other coupler 2 is pivoted through the lever 18 and the connecting rods 19 and 19, the valve shaft 4a of the other coupler 2 is rotated, and the on-off valve 4 fixed thereto is opened. .

As described above, the emergency disconnection device 1 in the fluid handling apparatus according to the embodiment includes the pair of couplers 2 and 2 that are provided with the on-off valves 4 and 4 and are connected to each other by connecting the connection flanges 2a and 2a. A plurality of clamp members 5 are connected to the outer peripheral portions of the connection flanges 2a and 2a in a state of being connected by the hinges of the hinge pins 7 and the connecting rods 6 in an annular manner, and the end clamp members 5e and 5e positioned at both ends Are connected to each other by a connecting mechanism 8 so that the pair of couplers 2 and 2 are connected to each other, and the levers 18 and 18 for interlocking the opening and closing operations of the on-off valves 4 and 4 of the pair of couplers 2 and 2. And an on-off valve 4, 4 by rotating the valve shaft 4 a of the on-off valve 4 of one coupler 2. After allowed to closed, and an operation mechanism 33 for operating the coupling mechanism 8 of the clamper 3 to release the connection and if said end clamp member 5e, 5e,
The operating mechanism 33 is fixed to the first cylinder device 25 and the valve shaft 4a of the on-off valve 4 of the one coupler 2, and is brought into contact with the tip of the rod 25a of the first cylinder device 25, The cam surface 21a that allows the rod 25a to extend in a state where the valve shaft 4a is rotated in the valve closing direction by the extension of the rod 25a and the rotation of the valve shaft 4a is stopped after the on-off valves 4 and 4 are closed. And a pusher that is pressed and moved by the rod 25a that extends after the rotation of the valve shaft 4a by the cam 21 is stopped.

Therefore, according to the emergency disconnection device 1 in the fluid handling apparatus according to the above-described embodiment, the cam 21 fixed to the valve shaft 4a of the on-off valve 4 of the one coupler 2 has its cam surface 21a on the first cylinder device. Since the valve shaft 4a is rotated by abutting and pivoting on the tip of the rod 25a of the 25, a pin is inserted into an elongated hole between the valve shaft 4a and the rod 25a of the first cylinder device 25. It is not necessary to use a link mechanism provided with a plurality of connecting portions formed by fitting together, the rotation mechanism of the valve shaft 4a of the on-off valve 4 is simple, and the movement of the rod 25a of the first cylinder device 25 is controlled by a valve. The rotation of the shaft 4a can be accurately transmitted, and the on-off valves 4 and 4 can be reliably closed by a firm closing force. Then, after the on-off valves 4 and 4 are closed, the pusher 31 is immediately activated by the extension of the rod 25a of the first cylinder device 25 while the on-off valves 4 and 4 are reliably kept closed by the cam surface 21a. When actuated, the coupling of the couplers 2 and 2 by the coupling mechanism 8 can be released.
In addition, since the movement direction of the rod 25a of the cylinder device 25 can be changed by the pusher 31 so that the connecting mechanism 8 of the clamper 3 can be reliably operated, the cylinder device 25 is attached to the connecting mechanism 8 on the coupler 2. The degree of freedom in selecting the position is increased, and the design and manufacture of the device becomes easy.

  The emergency disconnecting device 1 in the fluid handling apparatus has the cam surface 21a of the cam 21 at the reduced end position of the rod 25a of the first cylinder device 25 when the on-off valves 4 and 4 are fully opened. The rod 25a is in contact with the tip of the rod 25a at a right angle, and when the on-off valves 4 and 4 are fully closed by the extension of the rod 25a, the tip of the rod 25a is parallel to the extension direction of the rod 25a. Therefore, when the on-off valves 4 and 4 are closed, the extension movement of the rod 25a of the first cylinder device 25 is effectively transmitted to the turning motion of the cam 21. The on-off valves 4 and 4 are promptly closed. After the valve is closed, the rod 25a is smoothly and promptly passed through the pusher 31 while maintaining the closed state of the on-off valves 4 and 4 firmly. It can shift to the operation of the binding mechanism 8.

  Further, in the emergency disconnecting device 1 in the fluid handling apparatus, the first cylinder device 25 in which the pressure roller 26a and the guide roller 26b are rotatably supported on the tip of the rod 25a on the one coupler 2 includes the rod 25a. The pusher 31 is mounted so that its expansion and contraction direction coincides with the axial direction of the couplers 2 and 2, and the pusher 31 is supported so as to be movable in a direction perpendicular to the expansion and contraction direction of the rod 25a, and the guide roller 26b of the rod 25a is brought into contact. A guide rail 27 is provided to guide the rod 25a in the extending and contracting direction. As the rod 25a extends, the pressing roller 26a moves along the guide rail 27 via the guide roller 26b, and the cam 21 The valve shaft 4a is rotated in contact with the camshaft, and the rotation of the valve shaft 4a by the cam 21 is stopped before Guide roller 26b is configured to abut the pusher 31 to the connecting mechanism 8 is pressed move (spring case 17).

  Therefore, when the rod 25a of the first cylinder device 25 turns the cam 21 via the pressing roller 26a, the guide roller 26b applies a force to the guide rail 27 to bend the rod 25a laterally with respect to the expansion / contraction direction. The rods 25a can be effectively removed by contact so that the rod 25a can be extended and moved smoothly, and the pusher 31 can be smoothly operated by the guide roller 26b. In addition, since the first cylinder device 25 is attached to one coupler 2 along its axial direction and does not protrude laterally, when the cargo handling device moves inadvertently, it collides with other equipment. There is no risk of damage.

  In the emergency disconnecting device 1 in the fluid handling device, the rod 25a of the cylinder device 25 operates the connecting mechanism 8 of the clamper 3 via the pusher 31, but the present invention is not limited to this. For example, the cylinder devices 24 and 25 are arranged in a direction perpendicular to the axial direction of the coupler 2, and the axis of the rod 25a is positioned in the joint surface of the connection flanges 2a and 2a of the coupler 2 in plan view. When the rod 25a further extends after the on-off valve 4 is closed, the tip of the rod 25a may directly abut against the spring case 17 of the coupling mechanism 8 to press it. . If it does in this way, the said pusher 31 will become unnecessary and the structure of an apparatus will become simple.

It is a top view which shows the emergency disconnection apparatus in the fluid handling apparatus which concerns on one embodiment of this invention. It is the side view which similarly showed a part in cross section. FIG. 3 is a view taken in the direction of arrow X in FIG. 2. It is YY sectional drawing of FIG. It is ZZ sectional drawing of FIG. It is an operation | movement system diagram of the emergency disconnection apparatus in the fluid handling apparatus which concerns on one embodiment of this invention. It is operation | movement explanatory drawing of the emergency disconnection apparatus in the conventional fluid handling apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Emergency disconnection device 2 Coupler 2a Connection flange 3 Clamper 4 On-off valve 4a Valve shaft 5 Clamp member 5e End clamp member (clamp member)
6, 9, 19 Connecting rod 8 Connecting mechanism 17 Spring case 18 Lever 21 Cam 21a Cam surface 24, 25 Cylinder device 24a, 25a Rod 26a Pressure roller 26b Guide roller 27 Guide rail 31 Pusher

Claims (4)

A pair of couplers that are provided with an on-off valve and are connected to each other by connecting the connection flanges, and a plurality of clamp members that are connected by hinges and attached to the outer periphery of each connection flange in an annular shape, are positioned at both ends. A clamper for connecting the pair of couplers to each other by connecting the end clamp members to be separable by a connecting mechanism, an interlocking mechanism for interlocking opening / closing operations of the on-off valves of the pair of couplers, and opening / closing of one coupler An emergency in a fluid handling apparatus having an operation mechanism for operating the clamper connecting mechanism to release the connection between the end clamp members after rotating the valve shaft of the valve to close each on-off valve A disconnecting device,
The operation mechanism is fixed to a valve shaft of a cylinder device and an opening / closing valve of the one coupler, and abuts on a tip of a rod of the cylinder device to rotate the valve shaft in a valve closing direction by extension of the rod. And a cam having a cam surface that allows the rod to extend in a state in which the rotation of the valve shaft is stopped after the on-off valves are closed, and the cam shaft extends after the rotation of the valve shaft by the cam is stopped. An emergency disconnecting device for a fluid handling device, wherein the rod is configured to operate the connecting mechanism.   When the on-off valve is fully opened, the cam surface of the cam contacts the tip of the rod at a contracted end position of the rod of the cylinder device at a right angle to the expansion / contraction direction of the rod. 2. The emergency disconnecting device for a fluid handling apparatus according to claim 1, wherein the emergency disconnecting device is formed so as to be in contact with the tip of the rod in parallel with the extending direction of the rod when fully closed.   The said operation mechanism is equipped with the pusher which is pressed and moved by the said rod extended after the rotation of the said valve shaft by the said cam is stopped, and operates the said connection mechanism. Emergency disconnection device for fluid handling equipment. The cylinder device having a pressure roller and a guide roller rotatably supported at the tip of the rod is attached to the one coupler so that the expansion and contraction direction of the rod coincides with the axial direction of the coupler, and the pusher is attached to the rod. A guide rail that is supported so as to be movable in a direction perpendicular to the expansion and contraction direction and that guides in the expansion and contraction direction of the rod by contacting the guide roller of the rod is installed. The guide roller moves along the guide rail and contacts the cam to rotate the valve shaft, and after the rotation of the valve shaft by the cam is stopped, the guide roller presses and moves the pusher. The emergency disconnecting device in the fluid handling apparatus according to claim 3, wherein the emergency disconnecting device is brought into contact with the coupling mechanism.

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